flan/spike/x86/p4-convention.flan

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;; The internal calling convention, which the fizz program does not touch at
;; all: an aggregate argument, an aggregate return, a float in the SSE half,
;; and more integer arguments than there are registers for.
(defstruct V3 [x f32 y f32 z f32])
(defn scale [v V3 k f32] V3
(V3 {.x (* (.x v) k) .y (* (.y v) k) .z (* (.z v) k)}))
(defn sum3 [v V3] f32
(+ (+ (.x v) (.y v)) (.z v)))
(defn eight [a i64 b i64 c i64 d i64 e i64 f i64 g i64 h i64] i64
(+ (+ (+ a b) (+ c d)) (+ (+ e f) (+ g h))))
(defn taglen [s [const u8]] i64
(i64 (length s)))
(defn main [] i32
(let [v (V3 {.x 1.0 .y 2.0 .z 3.0})
w (scale v 2.0)]
(print (sum3 v)) (println "")
(print (sum3 w)) (println "")
(print (eight 1 2 3 4 5 6 7 8)) (println "")
(print (taglen (bytes-view "hello"))) (println "")
(print (.z w)) (println ""))
0)